Excellent idea with the activated charcoal! Great soft serve! Definitely worth the wait just go with friends and chat and you'll be at the cash register before you know it! There is coconut charcoal, ube (which is taro), matcha green tea and vanilla. You can really mix and match they are really good about it. Charcoal cone is amazing.
My only criticism is to write down exactly what each 'unique flavour names' are. E.g.) Ube Haze and right under in smaller font, ube 100%, to avoid people asking what everything is and the register woman doesn't have the repeat herself so many times. Could also quicken the line up abit.
Of course they only just open not too long ago and they are probably still trying to figure the logistics out so it's be kind and patient! Great service too btw!